Duties of Customs

I hear very much my hon. Friend’s argument, but would she acknowledge that this is a paving Ways and Means motion seeking, at this snapshot in time, to circumscribe the scope of the Bill to ensure that we can replicate the current customs union? Should we have, at some hypothetical point in the future, that crashing-out scenario, Parliament could address that at that point, and so at present the amendments from my hon. Friend the Member for Edinburgh South (Ian Murray) are absolutely pertinent to the message we need to send to the Government.